package com.sky.controller.user;

import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.impl.DishServiceImpl;
import com.sky.vo.DishVO;
import io.swagger.annotations.ApiOperation;
import io.swagger.models.auth.In;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.ArrayList;
import java.util.List;

@RestController("userDishController")
@Slf4j
@RequestMapping("/user/dish")
public class DishController {
    @Autowired
    private DishServiceImpl dishService;
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> findByCategoryId(@RequestParam Long categoryId) {
        log.info("查询的菜品分类id为:{}", categoryId);
//        构造redis中的key 规则 dish_分类id
        String key = "dish_" + categoryId;

//        查询redis中是否存在菜品数据
        List<DishVO> list = (List<DishVO>) redisTemplate.opsForValue().get(key);
        if (list != null && list.size() > 0) {
//            如果存在直接返回 无需查询数据
            return Result.success(list);
        }
//        如果不存在 查询数据库 将查询到的数据放入到redis中
        List<DishVO> dishVOS1 = dishService.listWithFlavor(categoryId);
        redisTemplate.opsForValue().set(key, dishVOS1);
        return Result.success(dishVOS1);
    }
}
